Portable desktop light bar fixture



FIG. 1 is a top perspective view of a portable desktop light bar fixture, showing the new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken line disclosure represents portions of the portable desktop light bar fixture which form no part of the claimed design. 

CLAIM We claim the ornamental design for a portable desktop light bar fixture, as shown and described. 